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Re: Spiders and Joints
Posted by David Prantl (more from David Prantl) on Fri, 30 Nov 2001 00:27:53
In Reply to: , Kok Chen, Sat, 17 Dec 1988 12:00:00 

>  a) there are now more 'needles' than will fit in the  bearing (approx. 8 
>or so) - does this mean: i) they came  from another bearing? ii) were 
>leftover from a previous  R and R? iii) somehow fit into the bearing that 
>fell off?

Probably a combination of i) and ii).

>  the inner and outer races seem to simply slide on top of  the needles 
>when they are packed into the bearing. Is  this suppose to be a 'pressure' 
>fit or are the needles/
>  bearing kept in place once inside the inner driver by  the races?

Not really a pressure fit.  Once the bearings are inside the driver cup, 
there's nowhere for the races to go, so it's OK.

>  I have checked both Bentley and Haynes and both ...
>  suggest that they can be repacked and held together  with grease.

The presence of grease should be enough to keep the races from slipping off 
the needles of their own accord.

>  Should I replace the bearing as a matter of course?

Only if it looks like there's something wrong with them, or if you don't 
have enough rollers to properly fill all three bearings.

>  If so do I need to buy the whole shaft or can I buy  individual bearings?

The tripod bearing assembly can be removed from the end of the driveshaft 
with the help of a cheap 3-jaw puller, and is sold separately.  A circlip 
may also be present, and if so, needs to be removed as well.  See:

http://www.thesaabsite.com/900old/900&79to94cvs&related.htm


David Prantl
david_prantlno39sdcx6spamx782hotmail.com
'84 900S, 5M, 210kMi, RIP as of 2/98
'89 900, 3A, 116kMi, restored and SOLD on 3/24/01
'86 9000T, 5M, 192kMi
'88 9000S, 5M, 142kMi
'90 9000S, 4A, 136kMi
'93 9000CSET, 5M, 74kMi
'97 9000CSET, 5M, 60kMi
'68 97 Sonett V4, 4M, 76kMi, #000467

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